Slight rattle from engine when revving up (SBC 305) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rich84 · 11-17-2015, 12:03 PM

Also, check the bolts on the flywheel..They could be lose or the flywheel could be cracked.

Dead Parrot · 11-17-2015, 01:39 PM

Hydraulic lifters can be noisy if they don't get enough oil.

While doing your belt test, might as well run it briefly without any belts. Had a PS pump sound similar to a bad lower end bearing. That PS pump caused a bit of panic since I had just installed a new crate motor two week previous. If your noise continues with no accessories turning, engine related. Otherwise you can try various belt combinations until you locate the noisy accessory.

11-17-2015, 12:03 PM	#1
Rich84 Registered User Join Date: Mar 2012 Location: Woodbury, Ct. Posts: 1,709	Re: Slight rattle from engine when revving up (SBC 305) Also, check the bolts on the flywheel..They could be lose or the flywheel could be cracked.

11-17-2015, 01:39 PM	#2
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,670	Re: Slight rattle from engine when revving up (SBC 305) Hydraulic lifters can be noisy if they don't get enough oil. While doing your belt test, might as well run it briefly without any belts. Had a PS pump sound similar to a bad lower end bearing. That PS pump caused a bit of panic since I had just installed a new crate motor two week previous. If your noise continues with no accessories turning, engine related. Otherwise you can try various belt combinations until you locate the noisy accessory.



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